repudiate vs withdraw

repudiate and withdraw both are verbs.

Word	Noun	Adjective	Verb	Adverb
repudiate	No	No	Yes	No
withdraw	No	No	Yes	No

As verbs, withdraw is a hyponym of repudiate; that is, withdraw is a word with a more specific, narrower meaning than repudiate:

repudiate (verb)	withdraw (verb)
refuse to acknowledge, ratify, or recognize as valid	keep away from others
cast off	remove something concrete, as by lifting, pushing, or taking off, or remove something abstract
reject as untrue, unfounded, or unjust	make a retreat from an earlier commitment or activity
refuse to recognize or pay	take back what one has said
	release from something that holds fast, connects, or entangles
	lose interest
	pull back or move away or backward
	remove (a commodity) from (a supply source)
	cause to be returned
	break from a meeting or gathering
	withdraw from active participation
	retire gracefully